Ordnance.



` UTED STATES PATENT OFETCE.

JOHN H. BROVN, OF READING, PENNSYLVANIA, ASSIGNOR TO BROWN WIRE GUN COMPANY, OF NEV YORK, N. Y., A CORPORATION OF MAINE.

ORDNANCE.

Specification of Letters Patent.

Patented Nov. 28, 1905.

T0 cti/Z whom, t mln/y concern:

Be it known that l, JOHN H. BROWN, a citi- Zen of the United States, and a resident of Reading, in the county of Berks and State of Pennsylvania, have invented new and useful Ordnance, of which the following is a specification.

My invention relates to ordnance, with the obj ect in view of maintaining'the several segments surrounding the liner or core tube of a gun securely in their position relative to one another and to the liner or core tube, no matter what the strain upon the gun may be.

To this end my invention consists,broadly, in a liner or core tube having one or more longitudinally-extending steps thereon to form an abutment or abutments for the segments which are intended to surround the tube and form the inner portion of the body of the gun.

A practical embodiment of my invention is represented in the accompanying drawings, in which- Figure l is a view of the liner or core tube in side elevation. Fig. 2 is a view in transverse section. Fig. 3 is a transverse section through the liner or core tube and segments assembled thereon. Fig. 4 is a transverse section of aliner or core tube, showing a modified form of step; and Fig. 5 is a transverse section showing a further modification of the liner or core tube and also of the sheet or segment to be applied thereto.

In the form which l have chosen to illustrate my invention and which T have found eminently practical in the construction of ordnance the liner or core tube (denoted by l is provided with steps or shoulders extending longitudinally of the tube and each in a radial plane passing through the longitudinal axis of the tube. I have shown the tube as provided with eight steps or shoulders 2 on its periphery but it is to be understood that this number may be increased or diminished at pleasure, depending upon the thickness of the sheets or segments to be applied to the liner or core tube and the required thickness vof the body which is to be made up of such sheets or segments.

ln the form shown in Figs. l, 2, 3 l have shown the shoulders as provided with a face formed on a curve, as shown at 3; but this is not essential, as the faces might be formed, if so desired, as plain surfaces 4. (See Fig. 4.) The sheets or segments, which are intended to have their inner edges rest against the steps or shoulders on the liner or core tube, are denoted by 5. They are intended to y overlap one another, forming involute curves,

and it is my practice to apply a body of wire 6, wound under tension to the exterior of the segments, to complete the body of the gun.

rThe hereinabove described stepping or shouldering of the exterior surface of the liner or core tube for the reception of the inneredges of the sheets or segments to be applied thereon serves to hold the several sheets or segments positively in position with relation to the liner or core tube and also with relation to one another, so that when the body of wire is wound thereon under tension there will be no possible slipping of one section with respect to another, nor will there be any such liability of the segments creeping when the gun is fired under extremely high pressures.

In practice it is intended to make the step' or that part of the periphery of theliner or core tube intermediate of two shoulders conform to the curve which the involute sheet or segment would assume if wound in superposed layers and to make the shoulder itself of such depth that a succeeding sheet or segment 'will rest in contact with the outer surface of a preceding sheet or segment as soon as it begins to overlap it. This structure is not, however, absolutely essential, as the edge of the sheet or segment which is to be applied to the step on the periphery of the liner or core tube may be tapered, as shown at 7, Fig. 5, and the curve on the periphery of the liner or core tubev intermediate of two consecutive shoulders correspondingly varied, as shown at 8, so as to permit the tapered portion of the sheet to rest snugly against it without carrying the outer face of the sheet or segment out of its convolute curve.

While I have referred to the shouldered or stepped tube as a liner-tube, it is to be understood that my invention applies with equal force to any core-tube, whether it be technically the liner-tube or some tube exterior thereto and within the portion of the body of the gun which is to be composed of longitudinal sheets or segments.

Vhat l claim is- A core-tube for guns having its exterior provided with one or more steps or shoulders extending longitudinally thereof and over- IOO lapping sheets or segments arranged With I ence of tWo Witnesses, this 21st day of April, their inner edges engaged with the steps Or 1904.

shoulders on the core-tube and means for Y T 7 holding the said sheets or segments in assem- JOHD H BRO N' 5 bled adjustment. W'itnesses:

In testimony that I claim the foregoing as FREDK. HAYNES, myinvention I have signed my name7 in pres- C. S. SUNDGREN. 

